Title :
A highly integrated analog front-end for 3G
Author :
Khalil, Waleed ; Chang, Tsung-Yuan ; Jiang, Xuewen ; Naqvi, Syed R. ; Nikjou, Babak ; Tseng, James
Author_Institution :
Intel Corp., Chandler, AZ, USA
fDate :
5/1/2003 12:00:00 AM
Abstract :
This paper describes a reconfigurable analog front-end (AFE) and audio codec IC supporting the wideband code division multiple access (WCDMA) standard. The chip is fabricated on Intel´s 0.18-μm (SOC) flash+logic+analog (FLA) process technology using a 0.35-μm feature size analog transistor. The transmit path contains a 10-bit segmented rail-to-rail digital-to-analog converter, automatically tunable active RC filter, and programmable gain amplifier (PGA) with self-tuning gain and offset correction circuit. The receive path incorporates a PGA, active RC filter, and an 8-bit analog-to-digital converter with built-in offset correction. The AFE operates at 2.7 V with a current consumption of 55 mA and total active area of 15 mm2.
Keywords :
3G mobile communication; analogue-digital conversion; cellular radio; code division multiple access; digital-analogue conversion; speech codecs; system-on-chip; 0.18 micron; 0.35 micron; 10 bit; 2.7 V; 3G; 55 mA; 8 bit; FLA; PGA; SOC; WCDMA; audio codec IC; cellphone; offset correction circuit; programmable gain amplifier; rail-to-rail digital-to-analog converter; reconfigurable analog front-end; self-tuning gain; tunable active RC filter; wideband code division multiple access; Active filters; Analog integrated circuits; Code standards; Codecs; Digital-analog conversion; Electronics packaging; Integrated circuit technology; Multiaccess communication; Tunable circuits and devices; Wideband;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2003.810059
